chromium/third_party/blink/web_tests/external/wpt/html/syntax/parsing/inhead-noscript-head.html

<!DOCTYPE html>
<meta charset=utf-8>
<title>Test that when the scripting flag is disabled, a head start tag in "in head noscript" mode is ignored</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<body>
<script>
promise_test(async function(t) {
    let iframe = document.createElement("iframe");
    iframe.srcdoc = "<!DOCTYPE html><head><noscript><head><style></style>";
    iframe.sandbox = "allow-same-origin";
    let loaded = new Promise(resolve => iframe.onload = resolve);
    document.body.append(iframe);
    await loaded;
    assert_equals(String(iframe.contentDocument.querySelector("noscript").firstChild), "[object HTMLStyleElement]");
}, "When the scripting flag is disabled, a head start tag in \"in head noscript\" mode should be ignored");
</script>